Diana Bandak, OD
NPI 1235805318ActiveIndividual· Optometrist· Bakersfield, CA
Optometrist (OD) in Bakersfield, California, trained at Southern California College of Optometry (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $43,219 for 452 claims, against $5,066 paid for services in 2024. Alcon Vision LLC reported $147.16 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1235805318 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Aug 19, 2021 |
| Last updated in NPPES | Mar 6, 2024 |
| Certified by provider | Mar 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT34850-TLG | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 88 across 13 procedure codes |
| Paid by Medicare | $5,066 |
Part D prescriptions in 2024
| Prescriptions (claims) | 452 · 634 30-day fills |
|---|---|
| Patients | 204 |
| Total drug cost | $43,219 |
| Generic share | 65% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Optometry |
Medical group
- Retina Institute of California Medical Group, A California Medical ParPalm Desert, CA · 77 clinicians
Industry payments (Open Payments)
- 2025$147.16 · 1 payment from 1 company
- 2024$60.88 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $147.16 | 1 |
What the 2025 payments were for
- Food and Beverage$147.16 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 119 optometrists in Bakersfield · All optometrists in California